User manual SIGMA 50-150MM F2.8 EX DC APO OS HSM

[. . . ] On the lens mount surface, there are a number of couplers and electrical contacts. Please keep them clean to ensure proper connection. While changing the lens, be sure to place it front end down to avoid damaging the rear mount. SETTING THE EXPOSURE MODE AF The Sigma lens functions automatically once attached to the camera. [. . . ] Please do not use Optical Stabilizer in the following situations. If you are not using Optical Stabilizer, please turn OFF the OS switch, in order to prevent consumption of a battery. Be sure to turn of OS switch to OFF position, before attaching or detaching the lens to the camera. The Optical Stabilizer continues to operate after you release your finger from the shutter button, as long as the exposure meter displays the exposure value. Never remove the lens or remove the camera’s battery while the image stabilizer is operating, you could damage the lens. Although the viewfinder image may appear to shake immediately after shooting and at the start of the flash charge cycle of the built-in flash of the camera etc. , it will not cause any effect on pictures. If the camera power is turned off or lens is detached while the Optical Stabilizer function is in operation, the lens may emit a chattering noise, but this is not a malfunction. For Sony and Pentax mounts, it is only possible to use the OS function, incorporated in this lens, with camera bodies which support motors driven by ultrasonic waves such as HSM. When using the OS function, please turn off the optical stabilizer function of the camera body and set the OS switch of the lens to ON. When using the camera’s optical stabilizer function, please set the OS switch of the lens to OFF and turn the camera’s optical stabilizer function on. optical Stabilizer function is powered from the camera. The OS unit of the lens will not fix into its position if the camera body is turned off before switching off the lens’ OS mechanism. Ignoring this notice might cause damage to the lens. Optical Stabilizer feature can work with the Nikon AF cameras shown in the following table. When using this lens with other camera models not listed in the following table, please set the OS Switch to OFF position to cancel the Optical Stabilizer function. Digital SLR Cameras and F6 From our homepage, you can check the latest information regarding the camera models, which can be used with Optical Stabilizer function. To remove the tripod collar from the lens, first loosen and then disengage the locking knob. FLASH PHOTOGRAPHY The camera’s built-in flash will cause barrel shadow if used with this lens. For best results, please only use an external flash unit. DG AF 5000001 ABOUT TELE CONVERTERS The lens can be used with Sigma’s 1. Do not use other manufacturers’ teleconverter’s, only those listed above are compatible. [. . . ] DC (image circle) DC ( 1) OS DC , Dimensions and weight include the SIGMA mount. aPO lenses use Special Low Dispersion glass. This special glass normally has some tiny air bubbles but it does not affect the optical performance. The glass materials used in the lens do not contain environmentally hazardous lead and arsenic. [. . . ]